Credit cards can be operated through Alipay except the bound email address. The specific operation steps are as follows:

1. Step 1: Log in to Alipay wallet client and click the "Credit Card Repayment" option in the main interface, as shown in the following figure;

2. Step 2: Click the "Credit Card Repayment" option to enter the interface shown below, and select the credit card whose email address needs to be modified, as shown below;

3. Step 3: After selecting the credit card whose mailbox needs to be modified, enter the main interface of the credit card and you can see the bill in the mailbox. Click the bill to enter the next interface, as shown in the figure below;

4. Step 4: After entering the bill details page, click "Basic Information" in the position shown below, as shown below;

5. Step 5: After completing the above operations, you can see the email address bound to the credit card repayment bill, with a "Delete" option next to it, and click it, as shown in the following figure;

6. Step 6: After clicking "Delete", confirm the information again and confirm the deletion of the mailbox, as shown below;

7. Step 7: Return to the credit card repayment interface and find that there is no bill in the mailbox, as shown below.